#include <iostream>
#include <vector>
using namespace std;
vector<int> add(vector<int>&A, vector<int>&B)
{
    if (A.size() < B.size()) return add(B, A);
    int t = 0;
    vector<int> C;
    for (int i = 0; i <A.size(); i++)
    {
        t = A[i] + t;
        if (i < B.size()) t += B[i];
        C.push_back(t%10);
        t /= 10;
    }
    if (t == 1) C.push_back(t);
    return C;

}

void solve()
{
	vector<int> A;
    vector<int> B;
    string a, b;
    cin >> a >> b;
    for (int i = a.size() - 1; i >= 0; i--) A.push_back(a[i] - '0');
    for (int i = b.size() - 1; i >= 0; i--) B.push_back(b[i] - '0');
    auto C = add(A, B);
    cout<<a<<' '<<'+'<<' '<<b<<' '<<'='<<' ';
    for (int i = C.size() - 1; i >= 0; i--) cout << C[i];
    cout<<endl;
}
int main()
{
    int t;
    cin>>t;
    int i=1;
    while(t--)
    {
    	
    	printf("Case %d:\n",i++);
    	solve();
	}
}

